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  • ISO 14912:2003

    Current The latest, up-to-date edition.

    Gas analysis — Conversion of gas mixture composition data

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    Published date:  03-03-2003

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    ISO 14912:2003 defines the following quantities commonly used to express the composition of gas mixtures: mole fraction, mass fraction and volume fraction, as well as mole concentration, mass concentration and volume concentration.

    Relating to these quantities of composition, ISO 14912:2003 provides methods for the conversion between different quantities and the conversion between different state conditions. Conversion between different quantities means calculating the numerical value of an analyte content in terms of one of the quantities listed above from the numerical value of the same analyte content, at the same pressure and temperature of the gas mixture, given in terms of another of these quantities. Conversion between different state conditions means calculating the numerical value of an analyte content, in terms of one of the quantities listed above, under one set of state conditions from the numerical value of the same quantity under another set of state conditions, i.e. pressure and temperature, of the gas mixture. Gas mixture composition can be converted simultaneously between different quantities of composition and different state conditions by combination of the two types of conversion.

    ISO 14912:2003 is only applicable to homogeneous and stable gas mixtures. Therefore any state conditions (pressure and temperature) considered need to be well outside from the condensation region of the gas mixture and that of each of the specified analytes.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes ISO/DIS 14912. (03/2003)
    Document Type Standard
    Publisher International Organization for Standardization
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    I.S. EN ISO 6142-1:2015 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS 1 MIXTURES (ISO 6142-1:2015)
    DD ISO/TS 29041:2008 Gas mixtures. Gravimetric preparation. Mastering correlations in composition
    13/30214514 DC : 0 BS ISO 6145-2 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 2: VOLUMETRIC PUMPS
    16/30266428 DC : DRAFT MAR 2016 BS EN ISO 6145-6 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 6: CRITICAL FLOW ORIFICES
    BS EN ISO 6145-6:2017 Gas analysis. Preparation of calibration gas mixtures using dynamic methods Critical flow orifices
    BS EN ISO 6142-1:2015 Gas analysis. Preparation of calibration gas mixtures Gravimetric method for Class I mixtures
    BS ISO 6145-2:2014 Gas analysis. Preparation of calibration gas mixtures using dynamic methods Piston pumps
    UNE-ISO 7504:2016 Gas analysis. Vocabulary
    DIN EN ISO 6142-1 E : 2015 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS I MIXTURES (ISO 61421:2015)
    UNE-EN ISO 6976:2017 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)
    BS EN ISO 6976:2005 Natural gas. Calculation of calorific values, density, relative density and Wobbe index from composition
    I.S. EN 838:2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
    EN 1076:2009 Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods
    EN 12021:2014 Respiratory equipment - Compressed gases for breathing apparatus
    DIN EN 16726 E : 2016 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
    14/30250844 DC : 0 BS EN ISO 6142-1 - GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS 1 MIXTURES
    DIN EN ISO 6142-1:2015-12 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - PART 1: GRAVIMETRIC METHOD FOR CLASS I MIXTURES (ISO 6142-1:2015)
    08/30163829 DC : DRAFT JAN 2008 BS EN 1076 - WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS
    ISO 7504:2015 Gas analysis Vocabulary
    I.S. EN 16726:2015 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
    DIN EN 1076:2010-04 Workplace exposure - Procedures for measuring gases and vapours using pumped samplers - Requirements and test methods
    DIN EN 12021:2014-07 RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS
    I.S. EN 12021:2014 RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS
    I.S. EN ISO 6976:2016 NATURAL GAS - CALCULATION OF CALORIFIC VALUES, DENSITY, RELATIVE DENSITY AND WOBBE INDICES FROM COMPOSITION (ISO 6976:2016)
    UNI EN 838 : 2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING DIFFUSIVE SAMPLERS - REQUIREMENTS AND TEST METHODS
    13/30255474 DC : 0 BS ISO 7504 - GAS ANALYSIS - VOCABULARY
    ISO/TS 29041:2008 Gas mixtures — Gravimetric preparation — Mastering correlations in composition
    I.S. EN ISO 6145-6:2017 GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC METHODS - PART 6: CRITICAL FLOW ORIFICES (ISO 6145-6:2017)
    DIN EN 16726:2016-04 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
    BS EN 1076:2009 Workplace exposure. Procedures for measuring gases and vapours using pumped samplers. Requirements and test methods
    UNE-EN ISO 6142-1:2016 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures (ISO 6142-1:2015)
    UNI EN 1076 : 2010 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS
    UNI EN 12021 : 2014 RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS
    17/30345272 DC : 0 BS ISO 14167 - GAS ANALYSIS - GENERAL QUALITY ASPECTS AND METROLOGICAL TRACEABILITY OF CALIBRATION GAS MIXTURES
    OIML R 99-1 & 2 : 2008 INSTRUMENTS FOR MEASURING VEHICLE EXHAUST EMISSIONS - PART 1: METROLOGICAL AND TECHNICAL REQUIREMENTS; PART 2: METROLOGICAL CONTROLS AND PERFORMANCE TESTS
    ISO 19229:2015 Gas analysis Purity analysis and the treatment of purity data
    BS ISO 20765-2 : 2015 NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 2: SINGLE-PHASE PROPERTIES (GAS, LIQUID, AND DENSE FLUID) FOR EXTENDED RANGES OF APPLICATION
    ISO 6145-2:2014 Gas analysis Preparation of calibration gas mixtures using dynamic methods Part 2: Piston pumps
    BS ISO 19229:2015 Gas analysis. Purity analysis and the treatment of purity data
    DIN EN 838:2010-05 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods
    ISO 6142-1:2015 Gas analysis Preparation of calibration gas mixtures Part 1: Gravimetric method for Class I mixtures
    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    BS EN 12021:2014 Respiratory equipment. Compressed gases for breathing apparatus
    BS EN 838:2010 Workplace exposure. Procedures for measuring gases and vapours using diffusive samplers. Requirements and test methods
    ISO 6145-6:2017 Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices
    I.S. EN 1076:2009 WORKPLACE EXPOSURE - PROCEDURES FOR MEASURING GASES AND VAPOURS USING PUMPED SAMPLERS - REQUIREMENTS AND TEST METHODS
    EN ISO 6976:2016 Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)
    EN ISO 6142-1:2015 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures (ISO 6142-1:2015)
    EN 16726:2015 Gas infrastructure - Quality of gas - Group H
    EN ISO 6145-6:2017 Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 6: Critical flow orifices (ISO 6145-6:2017)
    EN 838:2010 Workplace exposure - Procedures for measuring gases and vapours using diffusive samplers - Requirements and test methods
    12/30272264 DC : 0 BS ISO 20765-2 - NATURAL GAS - CALCULATION OF THERMODYNAMIC PROPERTIES - PART 2: SINGLE-PHASE PROPERTIES (GAS, LIQUID, AND DENSE FLUID) FOR EXTENDED RANGES OF APPLICATION
    BS EN 16726 : 2015 GAS INFRASTRUCTURE - QUALITY OF GAS - GROUP H
    14/30295048 DC : 0 BS ISO 19229 - GAS ANALYSIS - PURITY ANALYSIS AND THE TREATMENT OF PURITY DATA
    15/30289053 DC : 0 BS ISO 6976 - NATURAL GAS - CALCULATION OF CALORIFIC VALUES, DENSITY, RELATIVE DENSITY AND WOBBE INDEX FROM COMPOSITION
    UNE-EN 16726:2016 Gas infrastructure - Quality of gas - Group H
    BS ISO 7504:2015 Gas analysis. Vocabulary
    ISO 20765-2:2015 Natural gas Calculation of thermodynamic properties Part 2: Single-phase properties (gas, liquid, and dense fluid) for extended ranges of application
    UNE-EN 12021:2014 Respiratory equipment - Compressed gases for breathing apparatus
    DIN EN 12021:1999-01 RESPIRATORY EQUIPMENT - COMPRESSED GASES FOR BREATHING APPARATUS

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO/IEC Guide 98:1993 Guide to the expression of uncertainty in measurement (GUM)
    ISO 12213-3:2006 Natural gas Calculation of compression factor Part 3: Calculation using physical properties
    DIN 51896-2:1994-09 GAS ANALYSIS; QUANTITIES OF COMPOSITION, COMPRESSIBILITY FACTOR - PART 2: APPLICATION
    DIN 1871:1999-05 Gaseous fuels and other gases - Density and other volumetric quantities
    ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
    ISO 12213-1:2006 Natural gas Calculation of compression factor Part 1: Introduction and guidelines
    ISO 7504:2015 Gas analysis Vocabulary
    DIN 51896-1:1991-10 GAS ANALYSIS; QUANTITIES OF COMPOSITIONS, COMPRESSIBILITY FACTOR, BASIS
    ISO 12213-2:2006 Natural gas Calculation of compression factor Part 2: Calculation using molar-composition analysis
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